checking form field format function???

[MeLoDi]

hi there i have a form field which i need to validate. this feild can accept numbers as well as this format e.g 1-2 and 1,2,3,4,5
how do i go about it?

[Anarchos]

You'd want something like this:

<script type="text/javascript">
function checkIt(elm)
{
   if (elm.value.test(/^[0-9]+-[0-9]+$|^[0-9]+(,[0-9])*$/))
   {
      return true;
   }
    alert('Your field is wrong!!!?!?!');
    return false;
}
</script>

<form onsubmit="return checkIt(yourField)" action="">
<input name="yourField" type="text" value="blah" />
</form>

[MeLoDi]

i havea validate function and i adde this bit of code but it doest seem to work?

function DataValidation()
{
if (document.addform.block.value == "") {
alert("You must enter a value for Block!");
return false;
else 
if (document.addform.block.value(/^[0-9]+-[0-9]+$|^[0-9]+(,[0-9])*$/)) {
 return true; 
 } alert('Your field is wrong!'); 
 return false; 
 elm.focus();
elm.select();
 } 
}
:
:
:
: 

how do i solve this?

[Anarchos]

You forgot .test after .value